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Table 1 List and description of variables used in the binary logit regression model

From: Appraisal of cowpea cropping systems and farmers’ perceptions of production constraints and preferences in the dry savannah areas of Nigeria

Variable

Description

Variable type

Units

Dependent variable

   

 Cowpea cropping system

Farmer’s system of growing cowpea in the field

Dummy

1 = sole, 0 = intercrop

Independent variable

   

 Age

Farmer’s age category

Years

Continuous

 Education

Farmer’s formal education

Levels

Continuous

 Experience-cowpea

Experience in cowpea cultivation

Years

Continuous

 Extension-contacts

Access to cowpea production information from extension agents

Dummy

1 = yes, 0 = no

 Fertilizers

Use of phosphate fertilizers

Dummy

1 = yes, 0 = no

 Field days

Attendance of cowpea field days

Dummy

1 = yes, 0 = no

 Gender

Farmer’s gender

Dummy

1 = male, 0 = female

 Household-size

Size of farmer’s household

Persons

Continuous

 Status

Farmer’s marital status

Dummy

1 = married, 0 = single